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AUTOMATIC FAN.

N0. 297,886. Patented Apr. 22, 1884.

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ArENr AUTOMATIC FAN.

SPECIFICATION forming part of Letters Patent No. 297,386, dated April22, 1884.

Application filed February 18, 1884.

To all whom, it may concern,.-

Beit known that I, VILL B. GREENE, a citizen of the United States ofAmerica, residing at -Washington, in the District of Columbia, haveinvented certain new and useful Improvements in Automatic Fans, and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to an automatic fan having an oscillating orto-and-fro motion, the object being to provide a simple and reliableautomatic mechanism for operating such a fan.

The invention consists in a novel construction of motive mechanism andin the combination of the same with a fan, as will be hereinafterparticularly described with reference to the accompanying drawings, anddenitely pointed out in the appended claims.

In the drawings, Figure I is a perspective view of an automatic fanconstructed according to my invention, a portion of the casing beingomitted and one of the supports of the motive mechanism being brokenaway in part in order to show the devices behind it. Fig. 2 is anenlarged perspective view of a portion of the fanshaft and the devicesby which it is directly operated. Fig. 3 is asimilar view of the sameparts in a different position. Fig. 4V is a perspective view of theimpelling-wheel which acts upon the pallet of the fan-shaft.

Referring to Fig. I, the letters a b c indicate a train of wheels gearedtogether in an ordinary manner and driven by a spring, d, for thepurpose of giving rotary motion to a shaft, e, having a pinion, f, withwhich the last wheel of the train is engaged. Upon the shaft e is fixeda three-toothed impelling-wheel, G, the crown-teeth g of which operateupon the pallets hh, which project at different angles from the shaft H,on opposite sides of the center of wheel G, and are so arranged thatwhen a tooth on one side of the wheel strikes one of the pallets andforces it out of its path, the shaft will be given a partial rotation,which brings the other pallet in the path of a tooth on the oppositeside of a wheel, so that it will be in turn struck and forced in theopposite direction, the alternate striking and moving of the palletscausing an oscillating motion of the shaft. By referring to Eig. 2 itwill be (No model.)

seen that a tooth, g, at the upper side of the wheel, is in contact withthe upper pallet, 7L, and in order to pursue its motion under the stressof the motive spring d, this tooth must force the pallet h in thedirection indicated by arrow number I, thus giving the shaft a movementwhich brings the lower pallet, h', into the position shown in Fig. 3, sothat it will be struck by the tooth g, at the lower side of the wheel,at the moment the upper tooth ,escapes from the pallet h, thelowerpallet, 7L', being thus caused to swing in a direction indicated byarrow number 2, and bring the upper pallet again in position to bestruck by a tooth, g,- as the wheel G continues to rotate. The shaft IIhas a bend, 7c, formed in it, in order that the center of oscillation ofthe shaft may be in line with the diameter of wheel G, and the palletsthus brought in proper position with reference to the teeth of saidwheel. The lower end of the shaft has a step bearing in a bracket Z,which projects inwardly from the fan-supporting plate p of the motivemechanism, and 1t has an upper bearing in an arm, m, through which itextends upwardly to the desired height for operating thefan N. This fanhas projecting from its inner end an arm, a, carrying a collar, o, whichfits upon the shaft H, and is vertically adjustable thereon, being heldin any desired position by a clamp-screw, s, which binds it to theshaft. W'hen the motive mechanism is wound, by applying a suitable keyto the squared projecting end q of the spring-shaft the spring willdrive the train to give a rotary motion to the shaft e, the wheel G uponwhich, acting upon the pallets of the shaft, gives an oscillating motionto said shaft, as already described, and a similar oscillating motion ofcourse to the fan N, which may be adjusted either vertically orangularly, as desired.

This fan may be placed upon a desk, a dining-table, or a stand near abed, so as to produce refreshing currents of air for the comfort of aperson or persons in its vicinity, and it will at the same time serve asa fly-fan. Of course it will be understood that a fan of any shape andsuitable size may be attached to the shaft.

I am aware that there have been combined with a fan-shaft having acircular series of radial arms projecting therefrom two plates withfingers on opposite sides of the shaft, and

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arranged to revolve and strike the radial arms alternately on oppositesides of said shaft, to give the same an oscillating motion; and I donot claim such a combination.

Having nonr described my invention, what I claim is- 1. The combination,with the automatic motor having the rotary toothed wheel G, of the shaftH, provided with a fan, and having the pallets h h projecting atdii'erent angles, and arranged to be struck alternately by teeth of saidwheel for the purpose of giving the shaft and fan an oscillating motion,substantially as described.

2. The combination, with the toothed Wheel G, provided with teeth g, andarranged to re- WILL B. GREENE.

Witnesses:

HARRY Y. DAvIs, A. H. NoRRis.

